If you want to disable comments needing to be authorized go to your dashboard, settings, discussion and uncheck the box that says a commenter must have a previously approved comment. You might also want to adjust the number of links allowed, I’d leave some limit on that one though you may want it larger than 2.

If we get a spambot invasion you will want to turn that back on, also you may need to turn on the one that says a user needs to be logged in to comment.

As long as that doesn’t happen leave that alone.